Process for the preparation of N,N'-dialkylalkanediamines
US6242651A · kind A · utility
0Cited by
1References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Jun 5, 2001 |
| Priority date | — |
| Expiry date | Oct 20, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/08
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A preparation process of N,N'-dialkylalkanediamine by reacting dihaloalkane with lower alkylamine characterized by carrying out the reaction with controlling the residual amount in the reaction system of haloalkaneamine intermediate represented by the formula (4): ##STR1## wherein R is a lower alkyl group, R.sub.1 and R.sub.2 are a hydrogen atom or a lower alkyl group, X is a chlorine, bromine or iodine atom, and n is an integer of 2 to 6, and the invention inhibits formation of by-products cyclic dialkyldiamine and trialkylalkanetriamine and can provide desired N,N'-dialkylalkanediamine with a high yield.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.